221101221019 has 16 divisors (see below), whose sum is σ = 253562020096. Its totient is φ = 188859405600.

The previous prime is 221101221017. The next prime is 221101221031. The reversal of 221101221019 is 910122101122.

It is a cyclic number.

It is not a de Polignac number, because 221101221019 - 2¹ = 221101221017 is a prime.

It is a super-2 number, since 2×221101221019² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221101221017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16628764 + ... + 16642054.

It is an arithmetic number, because the mean of its divisors is an integer number (15847626256).

Almost surely, 2^221101221019 is an apocalyptic number.

221101221019 is a deficient number, since it is larger than the sum of its proper divisors (32460799077).

221101221019 is a wasteful number, since it uses less digits than its factorization.

221101221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 221101221019 in words is "two hundred twenty-one billion, one hundred one million, two hundred twenty-one thousand, nineteen".